Grace cut through the water blissfully unaware of the eyes feasting on her bare bottom. The teacher's long dark hair flowed out behind her as she swam, her mind drifting pleasantly. This was her guiltiest pleasure, her naughtiest secret, and her favorite day.
Nude Day.
Every year now since she came to teach PE at Clefthill High, she snuck into the swimming annex and made this her Nude Day tradition. It was relatively safe. A group did water aerobics and there were swim lessons in the mornings, but by the afternoon, the place was locked up again, with only the other PE teachers and the janitors having keys. Of course, there was always the chance one of them could walk in, but the risk made the act all the more delicious.
Except now.
Eighteen-year-old freshly graduated Charlie gaped down at the naked woman and her perfect form as she swam through the water. Her ass was perfect, nice and juicy on her petite frame, and any time she rose up with her strokes, he could see the sides of her big breasts. Whoever she was, he didn't think she was a student, though he couldn't see her face.
"Holy shit," he whispered to himself, his cock rising in his swimming trunks.
Like her, he wasn't supposed to be there, but his father was a maintenance man for the school, and one of his duties was upkeep of the pool. Knowing that Charlie was trying to make an effort to keep the pounds off before college, he loaned his son a key to the place so Charlie could get in some laps in private.
And now here he was, staring at a completely nude woman in the school's pool, a beach towel neatly folded by the stairs leading into the water but not a stitch of clothing in sight other than that.
Too late, Charlie realized he was about to be discovered. She reached for the wall, spun, and kicked off again, her head rising. She reached out as if to start her strokes again, but before she made it more than a few feet, she floundered in the water, covering her breasts and straightening up, yelping, "Oh my God, oh shit!"
"Oh shit!" Charlie echoed, gaping at his fantastically nude dream woman.
His PE teacher, Ms. Grace Chen.
* * * * *
She pressed her body as close to the wall as possible. "Charlie, I... I..."
The eighteen-year-old had her flummoxed, and not just because she'd been caught by a former student, which could lead to potentially serious ramifications to her job. He was erect, his bulge standing tall in his blue swimming shorts. Very tall. Very fucking tall. Even as she wanted to die of embarrassment, she wanted to giggle too. When the young women in his life found out his secret, she doubted geeky Charlie was ever going to spend a Saturday alone again.
And he was a geek, but he also had her respect. She helped coach practices for the track team the year before, and Charlie, a senior, worked his ass off to some great gains. He wasn't quite fit enough to place often in his events, but if he kept slimming down and toning up, he might make it as a walk-on to his college team.
With his extra flab all but gone, Charlie approached a certain sort of youthful charm. His frizzy hair could use a trim, but his slim, long face, strong chin, and bedroom eyes would serve him well if he could ever work up the courage to ask a girl out. She would bet good money her ass and tits were the first he'd ever seen in real life. Not that there was anything wrong with that. She was older than him when she lost her virginity. But still, the idea that she had given him the thrill of his young lifetime amused her.
"I'm sorry, Ms. Chen. I didn't know, um, um, that anyone was in here. And I didn't expect..." He swallowed, his eyes roaming what little he could see of her. "...you know, um... you."
"What are you doing here?" she asked.
"My dad works for the school and takes care of this pool. That rhymes," he said, smiling weakly and looking like he might faint. "I... I come in here to exercise because Coach said swimming was really good cardio and it's my favorite way to exercise and... um... but what are you doing in here? No one's supposed to be here."
"Yeah, we're both kind of breaking the rules, aren't we?" she asked.
"You think?"
That made her laugh softly. "The truth?"
"Sure."
"Today is Nude Day. It was my favorite day in college. My roommate taught me about it, and every year, we did something dumb to celebrate it. Like we'd streak across the quad, or flash our professors or something."
"Holy shit," Charlie breathed.
"Well, okay, I had my bra on for that one but she went totally topless for it." Grace fought the urge to giggle like some brainless ditz, thinking about how wild they got. She and that same roommate had once held hands back to back as they blew six of the football team. Another time, their boyfriends took turns fucking their asses. God, she was getting turned on by this, the thrill of being caught by a student making her want to rub her thighs together.
"So... you do this because of Nude Day?" Charlie asked.
"Wh.... oh. I trailed off. Sorry." Grace unconsciously moved away from the wall, just by inches, but it was enough to show off even more of her big breasts. "Yeah. It's just a little bit of fun. I come in here every year and swim a few laps naked. It..."...excites me, she thought but didn't say. Despite the cool water against her skin, she felt flushed, and finally she was aware of her tits nearly above water, her big dark nipples visible under the surface. "Oops."
"I... I won't tell."
Grace expected a "if you let me see you naked" or "if you blow me or fuck me" but Charlie didn't say any of those things. He just stared, his hands twitching against his hips as though he wanted to jerk his big cock.